Stereo audio amplifier boosts sound 50 times. Great for the hearing impaired (e.g. when watching TV), as a gadget, science project, … With volume control and on/off switch.
- power supply: 3 x 1.5V AA batteries (not incl.)
- dimensions: 62 x 54 x 44mm / 2.4 x 2.1 x 1.7″